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serial: 8250_dma: Convert to use uart_xmit_advance()

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uart_xmit_advance() provides a common way on how to advance
the Tx queue. Use it for the sake of unification and robustness.

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220909091102.58941-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2022-09-09 12:11:02 +03:00 committed by Greg Kroah-Hartman
parent 77b2d26805
commit e02fbb0bcb
1 changed files with 1 additions and 3 deletions
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4
drivers/tty/serial/8250/8250_dma.c
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@ -26,9 +26,7 @@ static void __dma_tx_complete(void *param)
dma->tx_running = 0;
xmit->tail += dma->tx_size;
xmit->tail &= UART_XMIT_SIZE - 1;
p->port.icount.tx += dma->tx_size;
uart_xmit_advance(&p->port, dma->tx_size);
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
uart_write_wakeup(&p->port);